test: reduce repeated app fixture setup

[bifrost0x]

Summary

• create one initialized empty SQLite template per pytest worker and clone it into each test data directory
• keep function-level database isolation while avoiding hundreds of repeated schema builds
• skip background runtime jobs for ordinary app fixtures and use an explicit runtime fixture for lifecycle contracts
• generate immutable private-key fixtures once per pytest session

Performance

Measured on the same Python 3.11 environment and test set:

• serial suite: 253.19s -> 137.62s (46% faster)
• current CI command with 2 workers and loadscope: 160.62s -> 76.96s (52% faster)

The workflow worker count and test selection are unchanged.

Validation

• 107 focused runtime, lifecycle, health, and key tests passed
• 2,278 passed, 2 skipped serially
• 2,278 passed, 2 skipped with the current CI pytest command
• 2,278 passed, 2 skipped with an alternate work-stealing distribution to check order independence
• git diff --check

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-31T11:36:19.936233Z	cbc47ac	PR opened

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